County profile · official public datasets

Bond County, IL

162 public highway bridges tracked in the FHWA National Bridge Inventory: 45.7% rated Good, 46.3% Fair, 8% Poor.

162
Public bridges: 45.7%
Good condition: 8%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Bond County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

54th
of 102 on Poor share: 8%
Poor-condition share: 162
public highway bridges: 1971
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Bond County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Bond County ranks #54 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8%). Bond County, Illinois contains 162 public highway bridges. Roughly 45.7% are rated “Good,” 46.3% “Fair,” and 8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

Total bridges

162

Public highway bridges in Bond County

Good condition

45.7%

74 of 162 rated 7-9

Fair condition

46.3%

75 of 162 rated 5-6

Poor condition

13 of 162 rated 4 or below

In-state Poor-share rank

#54 of 102

Among Illinois counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 162 NBI-tracked bridges by lowest applicable component rating.

Good

45.7% (74)

Fair

46.3% (75)

Poor

8% (13)

Bond County's Poor-condition bridges carry 30,375 vehicle crossings a day

That is 9.4% of the county's reported daily bridge traffic on 8% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 2,337 crossings a day against 2,489 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 162 of 162 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

50.6% of Bond County's bridges have passed the 50-year mark

82 of the 162 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 45.7% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 43.1% of the county's Poor-condition bridge traffic

FAI 70 EB over MID FK SHOAL CREEK, built 1967, carries 13,100 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 13-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 30,375 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

7
1910s

4
1920s

6
1930s

6
1940s

6
1950s

8
1960s

39
1970s

18
1980s

24
1990s

22
2000s

10
2010s

11
2020s

1

What this shows Construction peaked in the 1960s, when 39 of the county's bridges still in the inventory were built, which is 24.1% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1971, 8 years older than the Illinois average of 1979.

How Bond County compares with Illinois's closest counties by inventory size

The 5 Illinois counties nearest Bond County in number of bridges, with their condition splits. Its 8% Poor share is the 5th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1983 is 12 years older.

Showing the 5 closest of 101 Illinois counties eligible for comparison.

Bridge inventory size and condition shares for Bond County and the 5 Illinois counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Cumberland County	169	54.4%	39.1%	6.5%	1979
Clay County	166	49.4%	37.3%	13.3%	1982
Hamilton County	165	80%	17.6%	2.4%	1989
Mercer County	163	50.9%	42.3%	6.7%	1982
Greene County	162	51.9%	42.6%	5.6%	1981
Bond County (this page)	162	45.7%	46.3%	8%	1971

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Bond County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Bond County, both outside Illinois so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IL (162 bridges here).

Perry County, AL · 162 bridges
Johnson County, AR · 162 bridges
Ouachita County, AR · 162 bridges
Monona County, IA · 162 bridges

Similar average build year

Nearest mean year-built outside IL (1971 here).

Wayne County, MI · avg 1971 · 1,026 bridges
Baltimore County, MD · avg 1971 · 783 bridges
Washington County, PA · avg 1971 · 655 bridges
Linn County, OR · avg 1971 · 566 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 162 Good 74 Fair 75 Poor 13

All bridges (162)

Sort:

Bond County Bridge Snapshot

Condition distribution

Bond County's Poor-condition bridges carry 30,375 vehicle crossings a day

50.6% of Bond County's bridges have passed the 50-year mark

One structure carries 43.1% of the county's Poor-condition bridge traffic

How Bond County compares with Illinois's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (162)

TR 254/GILHAM RD

TR 125

TR 248A

TR 248A

TR 159

TR 235

TR 199 Hookdale Av

FAI 70 WB

FAI 70 EB

IL 140

TR 197

CH 10/FAS 782

ILL 143

CH 10/FAS 782

ILL 127

ILL 143

US 40

FAS 1745 CH. 9

TR 75

US 40/FAS 779

ILL 143

FAI 70 EB

IL 140

US 40

US 40 / FAS 1751

TR 82

CH 3/FAS 1747

CH 2/FAS 782

CH 7

MADISON CO LINE RO

FAI 70 EB

FAI 70 WB

TR 94

IL 140 & IL 127

TR 75B

KING ROAD - TR 226

TR 112-SUGARLOAF R

SMITHBORO RD-TR 16

CH 18/FAS 777

CH 11

FAS 1746

CH 20/FAS 781

CH 19 JAMESTOWN RD

CH18/FAS 777

CH 2/KEYESPORT RD

FAS779 Pokey Rd CH

FAS-777 (NewDougRd

TR 60

TR 117

TR 111

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